.banner .center-wrap .btns .btn {
    position: absolute;
    width: 32px;
    height: 44px;
    background-image: url(images/icons.png);
    top: 50%;
    margin-top: -22px;
  }
  .banner .center-wrap .btns .btn.leftbtn {
    left: -40px;
    background-position: -145px -61px;
  }
  .banner .center-wrap .btns .btn.leftbtn:hover {
    background-position: -191px -61px;
  }
  .banner .center-wrap .btns .btn.rightbtn {
    right: -40px;
    background-position: -144px -10px;
  }
  .banner .center-wrap .btns .btn.rightbtn:hover {
    background-position: -190px -10px;
  }